Evaluation Board for 8-Channel, Simultaneous
Sampling, Bipolar 18-Bit ADC
EVAL-AD7609EDZ
Preliminary Technical Data
supply and can accommodate ± 10V and ±5V true bipolar input
signals. The part contains on-chip LDOs, reference and
reference buffer, track and hold circuitry, supply conditioning
circuitry, on-chip conversion clock, oversampling capability and
high speed parallel and serial interfaces. Full details on the
AD7609 are available in the AD7609 data sheet available from
Analog Devices, Inc., which should be consulted in conjunction
with this data sheet when using the evaluation board.
FEATURES
Full-featured evaluation board for the AD7609
EVAL-CED1Z compatible
Standalone capability
On-board optional voltage reference
Various linking options
PC software for control and data analysis when used with
EVAL-CED1Z
PART DESCRIPTION
GENERAL DESCRIPTION
This data sheet describes the evaluation board for the AD7609,
which is an eight channel simultaneously sampled True
differential, 18-Bit successive approximation analog-to-digital
converter (ADC). The AD7609 is capable of achieving a sampling
rate of 200 ksps per channel. The input signals are sampled
simultaneously thus preserving the relative phase information of
the signals on the input channels. The part operates from a 5V
On-board components include: the ADR421 2.5 V reference,
Various link options are explained in the Evaluation Board
Hardware section. Interfacing to this board is through a 96-way
connector. This 96-way connector is compatible with the EVALCED1Z also available from Analog Devices. External sockets
are provided for multiple signals.
FUNCTIONAL BLOCK DIAGRAM
AGND
CS
32 PIN HEADER
AVCC
VIN1 -VIN8
VIN8+
VIN8VIN5+
VIN5VIN4+
VIN4VIN1+
VIN1-
RD
CS
RD
AD7609
DB0-DB15
CONVSTA
CONVSTB
REFIN VDRIVE
ADR280
CED Board Connector
AVCC
CONVSTA CONVSTB
VDRIVE AGND
Figure 1.
Rev. PrA
Evaluation boards are only intended for device evaluation and not for production purposes.
Evaluation boards are supplied “as is” and without warranties of any kind, express, implied, or
statutory including, but not limited to, any implied warranty of merchantability or fitness for a
particular purpose. No license is granted by implication or otherwise under any patents or other
intellectual property by application or use of evaluation boards. Information furnished by Analog
Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog
Devices for its use, nor for any infringements of patents or other rights of third parties that may result
from its use. Analog Devices reserves the right to change devices or specifications at any time
without notice. Trademarks and registered trademarks are the property of their respective owners.
Evaluation boards are not authorized to be used in life support devices or systems.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
www.analog.com
Tel: 781.329.4700
Fax: 781.461.3113
©2011 Analog Devices, Inc. All rights reserved.
EVAL-AD7609EDZ
Preliminary Technical Data
TABLE OF CONTENTS
Features .............................................................................................. 1
Evaluation Board Software ...............................................................9
Part Description ................................................................................ 1
Installing the Software ..................................................................9
General Description ......................................................................... 1
Setting Up the EVAL-CED1Z ......................................................9
Functional Block Diagram .............................................................. 1
Software Operation .................................................................... 10
Revision History ............................................................................... 2
Using the Software.......................................................................... 11
Evaluation Board Hardware ............................................................ 3
Menu Bar ..................................................................................... 11
Power Supplies .............................................................................. 3
Part Information Section ........................................................... 11
Link Options ................................................................................. 3
Data Capture Tab........................................................................ 11
Setup Conditions .......................................................................... 5
Taking Samples ........................................................................... 12
Interfacing the Evaluation Board to the EVAL-CED1Z .......... 6
Evaluation Board Schematics and Artwork ................................ 14
Sockets ........................................................................................... 7
Ordering Information .................................................................... 22
Connectors .................................................................................... 8
Bill of Materials ........................................................................... 22
Test Points ...................................................................................... 8
Ordering Guide .......................................................................... 25
Operating with the EVAL-CED1Z Board ................................. 8
ESD Caution................................................................................ 25
REVISION HISTORY
04/11—Revision PrA: Preliminary Version
Rev. PrA | Page 2 of 28
Preliminary Technical Data
EVAL-AD7609EDZ
EVALUATION BOARD HARDWARE
POWER SUPPLIES
When using this evaluation board with the EVAL-CED1Z,
all supplies are provided from the EVAL-CED1Z through the
96-way connector. When using the board as a standalone unit,
external supplies must be provided. This evaluation board has
the following power supply inputs: AVCC (+5 V), AGND, VDRIVE,
and DGND.
The +5V and Vdrive supplies are decoupled to the ground
plane with 10 μF tantalum and 0.1 μF multilayer ceramic
capacitors at the point where they enter the board. There is also
an EMC filter prior to this decoupling on each supply including
the Vdrive supply. The supply pins for the external reference
are also decoupled to AGND with a 10 μF tantalum and a 0.1
μF ceramic capacitor.
Extensive ground planes are used on this board to minimize
the effect of high frequency noise interference. A singel ground
plane is used on this evaluation board.
LINK OPTIONS
There are multiple (LK), solder link options (SL), resister
options (R) and 16 Zero Ω link options (K) that must be set
correctly to select the appropriate operating setup before using
the evaluation board. The functions of these options are
outlined in Table 1.
Table 1. Link Option Functions
Link No.
Function
Analog input Circuitry Link options
SH1-SH8
These solder link options tie the AD7609 inputs Vx_IN+ to Vx_IN- inputs together.
If this link is inserted the input the Vx_IN- and Vx_IN+ inputs are connected together.
Power Supply Configuration Links
SL 9
SL10
SL2
SL3
SL4
SL5
SL 6
This solder link option selects the source of the 5V Analog Supply for the AD7609 evaluation board.
In position A the 5V supply is taken from the CED board connector J1 pin A32, B32, C32. (operation with CED board)
In position B the 5V supply is taken from the external J6 connector. – (stand alone mode)
This solder link option selects the source of the 3.3V digital VDRIVE supply for the AD7609 evaluation board.
In position A the VDRIVE supply is taken from the CED board connector J1 pin A8, B8, C8. (operation with CED board)
In position B the VDRIVE supply is taken from the external J5 connector. – (stand alone mode)
AD7609 Interface configuration links
This link option selects the source of the CS signal.
In position A the CS signal comes from the external EXT_CS SMB connector (CS).
In position B the CS signal comes from the J1 connector pin C10 CED board connector.
In position C the CS signal comes from CED_RD. (J1 A9)
This link option selects the source of the RD/SCLK signal for the AD7609 interface.
In position A the RD/SCLK signal come from CED_RD. (J1 A9)
In position B the RD/SCLK signal comes from the external RD (RD) SMB connector.
In position C the RD/SCLK signal comes from the J1 connector pin A7 (SPORT_TSCLK)
In position D the RD/SCLK signal comes from the external SCLK (SCLK) SMB connector.
This link option selects the source of the CONVST A signal for the AD7609 .
In position A the CONVST A signal comes from the CED connector J1 pin A17.
In position B the CONVST B signal comes from and external SMB connector CONVST A.
This link option selects the source of the CONVST B signal for the AD7609 .
In position A the CONVST B signal is connected to the CONVST A signal.
In position B the CONVST B signal is selected via the SL6 link option.
This link option selects the source of position B in the SL 5 link option.
In position A, option B of link SL5 will be connected to the external CONVST_BSMB socket.
In position B, option B of link SL5 will be connected to the CED connector J1 pin A14.
Rev. PrA | Page 3 of 28
EVAL-AD7609EDZ
Link No.
SL7
SL8
R1/R2
R3/R4
R5/R6
R7-R12
R20
K0-K15
Preliminary Technical Data
Function
This link option selects the destination of the serial data DB7 from the AD7609 in Serial mode
In position A data from DB7 (DOUTA) is fed to the JI CED connector pin C5.
In position B data from DB7 (DOUTA) is fed to the DOUT A SMB connector (DOUTA).
This link option selects the destination of the serial data DB8 from the AD7609 in Serial mode
In position A data from DB8 (DOUTB) is fed to the JI CED connector pin C13.
In position B data from DB8 (DOUTB) is fed to the SMB connector (DOUTB).
Resister options
When R1 is inserted the AD7609 will operate in +/- 10V range mode.
When R2 is inserted the AD7609 will operate in +/-5V range mode.
R1 and R2 should be removed when operating the EVAL AD7609 with the CED as the range is controlled via AD7609 software.
When R3 is inserted the AD7609 will operate in parallel interface mode. – R3 should be inserted when using the CED board.
When R4 is inserted the AD7609 will operate in serial mode.
When R5 is inserted the AD7609 will operate in internal Reference mode.
When R6 is inserted the AD7609 will operate in external reference mode. In this condition R20 should be inserted.
These 6 resisters determine the voltage of the OS pins. When using the software supplied with the EVAL AD7609 EDZ these 4
resisters should be removed.
R11 and R12 determine the voltage applied to OS2 pin of the AD7609 .
R9 and R10 determine the voltage applied to OS1 pin of the AD7609 .
R7 and R8 determine the voltage applied to OS0 pin of the AD7609 .
This resister should be inserted when operating the AD7609 in external reference mode. This resister selects the ADR421 as the
reference when R20 is inserted. In external reference mode R6 should be inserted
These zero Ohm links should be inserted to connect the digital parallel interface from the AD7609 to the CED board connector.
.
Rev. PrA | Page 4 of 28
Preliminary Technical Data
EVAL-AD7609EDZ
SETUP CONDITIONS
Care should be taken before applying power and signals to the
evaluation board to ensure that all link positions are as per the
required operating mode. There are two different modes in which
to operate the evaluation board. Either the user can operate the
board with the EVAL-CED1Z or it can be used as a standalone
board.
Table 2 and Table 3 shows the position in which all the links are
set when the evaluation board is packaged. When the board is
shipped, it is assumed that the user is operating with the EVALCED1Z board. The links are set so that all power supplies and
control signals are supplied by the EVAL-CED1Z.
The EVAL-AD7609EDZ EDZ is configured to use the AD7609
in external reference mode with the parallel interface.
Table 2. Link Positions on the Packaged EVAL-AD7609EDZ
Link No.
SH1SH8
32 PIN
HEADER
Position
NOT
INSERTED
INSERTED
Function
The AD7609 analog inputs are tied to AGND.
LINK OPTIONS SHOULD BE INSERTED WHEN THE CHANNELS ARE NOT IN USE.
Table 3. Solder Link Positions on the Packaged EVAL-AD7609EDZ
Link No.
SL2
SL3
SL4
SL5
SL6
SL7
Position
B
A
A
A
B
Not
inserted
SL8
Not
inserted
A
A
Not
inserted
R3
R6
Inserted
Not
inserted
Inserted
SL9
SL10
R1/R2
R3/R4
R5/R6
R20
R7-R12
K0-K15
Function
The CS signal is taken from the CED connector
The CONVST A signal comes from the CED connector J1 pin A17.
The CONVST B signal is connected to the CONVST A signal.
SL5 will be connected to the CED connector J1 pin A14.
5V supply taken from CED board
2.5V taken from CED board
Range selected via AD7609 software
Parallel mode selected
External reference mode
External reference mode
OS pins controlled via AD7609 software
These zero Ω link options are inserted to connect AD7609 parallel bus to the CED connector.
Rev. PrA | Page 5 of 28
EVAL-AD7609EDZ
Preliminary Technical Data
INTERFACING THE EVALUATION BOARD TO THE
EVAL-CED1Z
1
8
16
24
32
1
8
16
24
32
A
B
C
07606-002
Interfacing the EVAL-CED1Z board to the evaluation board is
via a 96-way connector, J1. The pinout for the J1 connector is
shown in Figure 2. Table 5 gives a description of the pins on the
96-way connector used to interface between the EVAL-CED1Z
board and the EVAL-AD7609EDZ . Table 4 gives its pin
designations.
Table 5. 96-Way Connector Pin Description
Signal
DRPRI
DRSEC
RSCLK
TFS
RFS
AVDD
VDRIVE
Figure 2. Pin Configuration for the 96-Way Connector, J1
−5 V
Table 4. 96-Way Connector Pin Functions1
Pin
1
2
3
4
Row A
DTPRI
TFS1
TSCLK1
DGND
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
1
DGND
Row C
DR1PRI
RFS1
RSCLK1
DGND
DT0PRI
TFS0
TSCLK0
VDRIVE (+3.3 V)
VDRIVE (+3.3 V)
DR0PRI
RFS0
RSCLK0
VDRIVE (+3.3 V)
DTOSEC
DGND
DGND
GPIO5
GPIO0
DGND
DGND
DGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
−12 V
(−5 V)
AVDD (+5 V)
Row B
GPIO3
GPIO1
DGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
(−5 V)
AVDD (+5 V)
GPIO6
DGND
DROSEC
GPIO7
GPIO4
DGND
GPIO2
DGND
AGND
GPIO 0
GPIO1
GPIO2
GPIO3
GPIO4
GPIO5
GPIO6
GPIO7
DGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
+12 V
(−5 V)
AVDD (+5 V)
The unused pins of the 96-way connector are not shown.
Rev. PrA | Page 6 of 28
Description
Data Receive Primary. This input is connected to the
DOUTA pin of the AD7609 .
Data Receive Secondary. This input is connected to
the DOUTB pin of the AD7609 .
Receive Clock.
Transmit Frame Sync.
Receive Frame Sync.
Analog +5 V Supply. These lines are connected to the
AVCC line on the board via LK.
Digital +3.3 V supply. This is used to provide the VDRIVE
supply to the board via LK for the digital logic.
Analog −5 V Supply. This supply is not used on the
EVAL-AD7609EDZ .
Digital Ground. These lines are connected to the
digital ground plane on the evaluation board.
Analog Ground. These lines are connected to the
analog ground plane on the evaluation board.
General-Purpose Input/Output.
General-Purpose Input/Output.
General-Purpose Input Output.
General-Purpose Input/Output.
General-Purpose Input/Output.
General-Purpose Input/Output.
General-Purpose Input/Output.
General-Purpose Input/Output.
Preliminary Technical Data
EVAL-AD7609EDZ
SOCKETS
There are 15 SMB input sockets relevant to the operation of
the AD7609 on this evaluation board. 13 of these sockets are
used for applying an externally generated signal
to the evaluation board while 2 are outputs. When operating
the board with the EVAL-CED1Z, the only external sockets
necessary are those used to supply the bipolar signal to the
selected analog inputs to the ADC (that is, VIN1 to VIN8). The
remaining sockets are optional and if they are not used, their
signals are supplied by the EVAL-CED1Z. Most of these sockets
are used when operating the board as a standalone unit, as all
the signals required are supplied from external sources. The
functions of these sockets are outlined in Table 6.
Table 6. Socket Functions
Socket
VIN4+
VIN4VIN5+
VIN5DOUT-A
DOUT-B
EXT_CS
RD
SCLK
CONVST A
CONVST B
Function
Subminiature BNC socket for a single ended input that is applied directly to the VIN4+ pin of the AD7609 .
Subminiature BNC socket for a single ended input that is applied directly to the VIN4- pin of the AD7609 .
Subminiature BNC socket for a single ended input that is applied directly to the VIN5+ pin of the AD7609 .
Subminiature BNC socket for a single ended input that is applied directly to the VIN5- pin of the AD7609 .
Subminiature BNC socket for DOUTA output.
Subminiature BNC socket for DOUTB output.
Subminiature BNC socket for an external CS input.
Subminiature BNC socket for an external RD input.
Subminiature BNC socket for an external SCLK input.
Subminiature BNC socket for CONVST A input.
Subminiature BNC socket for CONVST B input.
Rev. PrA | Page 7 of 28
EVAL-AD7609EDZ
Preliminary Technical Data
CONNECTORS
OPERATING WITH THE EVAL-CED1Z BOARD
There are 3 connectors on the EVAL-AD7609EDZ as outlined
in Table 7.
The evaluation board can be operated in a standalone mode or
operated in conjunction with the EVAL-CED1Z board. This
evaluation board controller is available from Analog Devices
under the order entry EVAL-CED1Z.
Table 7. Connector Functions
Connector
J1
J2
J5
J6
Function
96-way connector for the digital interface and
power supply connections.
32 PIN HEADER for analog inputs.
External VDRIVE and GND power connector.
External AVCC and GND power connector.
When interfacing the EVAL-AD7609EDZ directly to the EVALCED1Z board, all supplies and control signals to operate the
EVAL-AD7609EDZ are provided by the EVAL-CED1Z. The
AD7609 is interfaced to the EVAL-CED1Z via its parallel
interface and can run at full throughput rate. The software
allows the user to change the throughput rate by effectively
modifying the CONVST frequency.
TEST POINTS
There are numerous test points on the EVAL-AD7609EDZ EDZ.
These test points enable the user to have easy access to the
signals for probing, evaluation, and debugging.
Software to communicate with the EVAL-CED1Z and AD7609
is provided with the EVAL-AD7609EDZ package.
The 96-way connector on the EVAL-AD7609EDZ plugs
directly into the 96-way connector on the EVAL-CED1Z.
The EVAL-CED1Z provides all the supplies for the evaluation
board. It is powered from a 7 V, 15 W power supply, which
accepts input voltages from 100 V to 240 V ac and contains
the relevant adaptors for worldwide use. The power supply is
provided with the EVAL-CED1Z.
Connection between the EVAL-CED1Z and the USB port of a
PC is via a standard USB 2.0 connection cable that is provided
as part of the EVAL-CED1Z package.
Rev. PrA | Page 8 of 28
EVAL-AD7609EDZ
EVALUATION BOARD SOFTWARE
INSTALLING THE SOFTWARE
SETTING UP THE EVAL-CED1Z
The EVAL-AD7609EDZ evaluation kit includes self-installing
software on CD. The software controls and evaluates the performance of the AD7609 when it is operated with the EVALCED1Z. The software is compatible with Windows® 2000/XP®.
If the setup file does not run automatically, setup.exe can be
run directly from the CD.
This section describes how the evaluation board, the EVALCED1Z board, and the software should be setup to begin using
the complete system.
When the CD is inserted into the PC, an installation program
automatically begins. This program installs the evaluation
software. The user interface on the PC is a dedicated program
written especially for theAD7609 when operating with the
EVAL-CED1Z.
The software should be installed before the USB cable is connected
between the EVAL-CED1Z and the PC. This ensures that the
appropriate USB driver files have been properly installed before
the EVAL-CED1Z is connected to the PC.
When the software runs for the first time with the EVALCED1Z board connected to the PC, the PC automatically
finds the new device and identifies it. Follow the on-screen
instructions that appear. This installs the drivers for the CED
on the PC. If an error appears on screen when the software is
first opened, then the PC is not recognizing the USB device.
This error is corrected by the following steps:
1. Click My Computer, then select Properties. When the
System Properties window opens, select the Hardware tab.
2. Click Device Manager.
3. Examine the devices listed under the Universal Serial Bus
Controller heading. If an unknown device is listed, right
click this option and select Update Driver.
4. Note that the New Hardware Wizard runs twice. Under
ADI Development Tools, the hardware is listed as ADI
Converter Evaluation and Development Board (WF).
5. Reboot your PC.
1.
2.
3.
4.
5.
Install the AD7609 evaluation board software.
Connect the EVAL-CED1Z board and the evaluation board
together via the 96-way connector. Apply power to the EVALCED1Z via +7 V, 15 W power supply provided. At this
stage, the green LED labeled Power on the EVAL-CED1Z
should be lit, which indicates that the EVAL-CED1Z is
receiving power.
Connect the USB cable between the PC and the EVALCED1Z. A green LED positioned beside the USB
connector on the EVAL-CED1Z board lights up indicating
that the USB connection has been established.
The EVAL-AD7609EDZ is detected. Proceed through any
dialog boxes that appear (use the recommended options)
to finalize the installation.
Start the EVAL-AD7609EDZ software.
The FPGA on the EVAL-CED1Z is automatically programmed
when the software is opened. The two red LEDs (D14 and D15)
on the EVAL-CED1Z now light up. This indicates that the
EVAL-CED1Z is functional and ready to receive instructions.
Rev. PrA | Page 9 of 28
EVAL-AD7609EDZ
Preliminary Technical Data
Figure 3. AD7609 Main Window
SOFTWARE OPERATION
With the hardware set up, use the software to control the EVALCED1Z and the EVAL-AD7609EDZ . To launch the software
from the Analog Devices menu, use the following steps:
1.
2.
3.
Click the AD7609 submenu.
Click the AD7609 icon. Figure 3 displays the main
window that is opened.
If an error message appears, click OK and restart the
application after checking the connection between the
adapter board and the USB port on the PC. Also check
that the USB device is identified by the device manager
as detailed in the Installing the Software section.
The software that controls the EVAL-CED1Z and, therefore,
the AD7609 evaluation board, has two main windows. Figure 3
shows the window that appears when the software is run. The
main function of this window is to allow you to read
a predetermined number of samples from the evaluation board
and display them in both the time and frequency domain. The
top portion of the screen contains the menu bar and the screen
can be divided into three main sections: Part Information,
Data Capture, and Linearity. The Data Capture tab consists
of four subtabs: Waveform, Histogram, FFT, and Summary.
The Linearity tab enables you to generate a linearity plot for
the device. The Linearity tab is only available for the AD7609
version.
Rev. PrA | Page 10 of 28
EVAL-AD7609EDZ
USING THE SOFTWARE
MENU BAR
Histogram Tab
The menu bar consists of the following items: File, Edit,
Operate, Tools, Window, and Help.
The Histogram tab displays a histogram of the captured ADC
codes. It can be used to give an indication of the performance
of the ADC in response to dc inputs. The Histogram Analysis
section contains information about the samples taken; for
example, maximum and minimum codes captured.
PART INFORMATION SECTION
The Part Information section allows you to select the following
configuration options:





Part Number: AD7609 .
Sampling Frequency: The maximum sampling frequency
supported by the EVAL-AD7609EDZ is 200 kSPS.
Reading during conversion: When clicked the green light
will illuminate indicating that the read from the AD7609 is
now taking place during the conversion time. When the
green light is not illuminated the read takes place after the
conversion.
5V/10V throw switch: You can select the desired input
range for the AD7609 with this switch. The ‘5V’ switch
position selects the +/-5V input range while the ‘10V’
switch position selects the +/-10V input range.
Oversampling mode: selects the rate of oversampling.
FFT Tab
The FFT tab displays an fast Fourier transform (FFT) plot.
The FFT is typically used for examining the performance of
the ADC in the frequency domain. The Spectrum Analysis
section contains information about the samples taken, such
as ac specifications (see Figure 3).
You can choose whether to display the information for one,
several or all eight channels in the window using the ADC 1
On/ Off to ADC 8 On/Off buttons, as explained in the
Waveform Tab section.
The Part Information tab also includes a Busy status indicator,
which lights when the evaluation board is busy and an Exit
button to allow you to quit the program.
DATA CAPTURE TAB
In the Data Capture tab, the user can select the number of
samples to be captured from the drop-down menu. The
default number of samples is 4096; you are free to change
this as required. The desired display option is selected by
clicking any one of the Waveform, Histogram, or FFT tab.
Waveform Tab
The Waveform tab displays a digital storage oscilloscope
(DSO) that allows you to display a waveform. Samples are
displayed here when uploaded from the EVAL-CED1Z
board. The samples are displayed as integer code values.
At the bottom left of the graph are the zoom options. These
allow you to zoom in and out to get a closer look at a sample.
The Waveform Analysis section, which is located beneath the
waveform graph, contains information about the samples taken;
for example, minimum/maximum position or velocity, the
spread, the standard deviation, and the mean.
The waveform graph displays the information for all 8 input
channels or as many channels as desired. Eight buttons located
to the right hand side of the graph, labeled ADC 1 On/ Off to
ADC 8 On/Off are used to select which channel’s data is
displayed. An indicator, located beneath the graph, shows what
color graph represents each channel when the data from several
channels is displayed.
Rev. PrA | Page 11 of 28
EVAL-AD7609EDZ
Preliminary Technical Data
TAKING SAMPLES
To initiate a conversion and capture the sample data, click the
Sample button or the Continuous button. Both the Sample
and the Continuous buttons are located on the top right hand
corner of the Data Capture tab. When you click the Sample
button, the software instructs the EVAL-CED1Z board to take
the required number of samples at the required frequency from
the evaluation board. The EVAL-AD7609EDZ runs with
sampling speeds less than or equal to 200 kSPS. You can choose
the sampling frequency up to this rate and the number of
samples to be taken.
The samples taken are then uploaded and displayed. An FFT
and/or histogram can be calculated and displayed. If you click
the Continuous button, the software repeats the process indefinitely until you click Stop. (The Continuous button switches
to Stop when clicked).
Note that no data appears on the screen if the channels are not
selected. The ADC 1 On/ Off to ADC 8 On/Off buttons in the
Part Information section should be set to ON to select the
desired channels.
Rev. PrA | Page 12 of 28
Preliminary Technical Data
EVAL-AD7609EDZ
DEMONSTRATING THE AD7609 ANALOG INPUT ANTI-ALIASING FILTER
Figure 4 AD7609 Analog Input Filter Profile
The AD7609 analog input channels have an on-chip analog
anti-aliasing filter. The AD7609 evaluation board can be set up
to demonstrate the analog input filter profile of the AD7609
anti-aliasing filter. In Figure a full scale sweep of 100 Hz to 50
kHz is applied to an analog input channel on the AD7609
evaluation board. To see the profile of the filter the max hold
button corresponding to the analog input channel chosen for
the sweep is turned on. In Figure 4 this was for input channel 3.
The continuous sampling mode of operation is chosen on the
AD7609 software. The AD7609 will continuously convert the
input sweep being applied to the AD7609 analog input and the
resulting profile of the analog input filter is displayed on screen.
To get a smooth profile the AD7609 should be allowed to
continuously convert the input sweep sweep over a number of
sweep cycles. The analog input filter is designed for 40 dB
attenuation at 100 kHz.
Rev. PrA | Page 13 of 28
EVAL-AD7609EDZ
DEMONSTRATING THE AD7609 DIGITAL FILTER
Figure 5.Digital Filter effect on alias component, alias at 425 attenuated to >-90dB
The AD7609 contains an on-chip digital filter. The digital filter
is controlled via the OS X pins on the AD7609 device. The
AD7609 evaluation board can be configured to show the effects
of the on-chip digital filter. A 48 kHz 200 mV pk-pk input tone
is applied to one of the AD7609 evaluation board inputs, in this
case VIN3 (J23) is chosen. The AD7609 evaluation board
software is set to continuous conversion mode with a sampling
frequency of 100 kSPS. The resulting FFT shows a -50 dB
fundamental at ~ 48kHz. The sampling rate is then dropped to
1562 SPS. The resulting FFT shows a -50 dB alias at ~ 425 Hz.
Next select the ‘Oversampling by 16’ option from the
Oversampling Mode control button on the left side of the
screen. Keep the sampling rate at 1562 SPS. Figure 5 shows the
resulting FFT, the original -50 dB 425 Hz alias signal has been
attenuated to -91 dB due to the on-chip digital filter. Additional
attenuation can be achieved by selecting higher Oversampling
rates.
(See Over-Sampling Mode section of the AD7609 datasheet for
more information)
Rev. PrA | Page 14 of 28
Preliminary Technical Data
EVAL-AD7609EDZ
EVALUATION BOARD SCHEMATICS AND ARTWORK
EVAL-AD7609EDZ schematics, silkscreen, and layout can be found in Figure to Figure .
Figure 6. EVAL-AD7609EDZ Circuit Diagram 1
Rev. PrA | Page 15 of 28
EVAL-AD7609EDZ
Figure 7. EVAL-AD7609EDZ Circuit Diagram 2
Rev. PrA | Page 16 of 28
Preliminary Technical Data
EVAL-AD7609EDZ
Figure 8 EVAL-AD7609EDZ Circuit Diagram 3
Rev. PrA | Page 17 of 28
EVAL-AD7609EDZ
Figure 9 EVAL-AD7609EDZ Circuit Diagram 4
Rev. PrA | Page 18 of 28
Preliminary Technical Data
EVAL-AD7609EDZ
Figure 11. Component Side Artwork
Figure 12. Layer 2 Artwork
Rev. PrA | Page 19 of 28
EVAL-AD7609EDZ
Figure 13 Layer 3 Artwork
Figure 64 Solder Side Artwork
Rev. PrA | Page 20 of 28
Preliminary Technical Data
EVAL-AD7609EDZ
Figure 15. Component Side Silkscreen
Figure 16. Bottom layer silkscreen
Rev. PrA | Page 21 of 28
EVAL-AD7609EDZ
ORDERING INFORMATION
BILL OF MATERIALS
Table 8
Name
Part Description
Value
BUSY
TESTPOINT
C1
CAP
1uF
C2
CAP
C3
Tolerance
PART DESC
Part Number
STOCK CODE
Red Testpoint
20-313137
FEC 8731144 (Pack)
±10%
10V X7R Ceramic Capacitor
CC0805KKX7R6BB105
FEC 3352067
1uF
±10%
10V X7R Ceramic Capacitor
CC0805KKX7R6BB105
FEC 3352067
CAP
0.1uF
±10%
50V X7R Ceramic Capacitor
GRM188R71H104KA93D
FEC 8820023
C4
CAP
0.1uF
±10%
50V X7R Ceramic Capacitor
GRM188R71H104KA93D
FEC 8820023
C5
CAP
0.1uF
±10%
50V X7R Ceramic Capacitor
GRM188R71H104KA93D
FEC 8820023
C6
CAP
DNI
n/a
0603 Ceramic Capacitor Location
TBA
Not Assembled
C7
CAP
0.1uF
±10%
50V X7R Ceramic Capacitor
GRM188R71H104KA93D
FEC 8820023
C8
CAP
10uF
±10%
10V X5R Ceramic Capacitor
2222 2401 3676
FEC 9402136
C9
CAP
10uF
±10%
10V X5R Ceramic Capacitor
2222 2401 3676
FEC 9402136
C10
CAP
DNI
TBA
0603 Ceramic Capacitor Location
TBA
Not Assembled
C11
CAP
DNI
TBA
0603 Ceramic Capacitor Location
TBA
Not Assembled
C12
CAP
DNI
TBA
0603 Ceramic Capacitor Location
TBA
Not Assembled
C13
CAP
DNI
TBA
0603 Ceramic Capacitor Location
TBA
Not Assembled
C14
CAP
DNI
TBA
0603 Ceramic Capacitor Location
TBA
Not Assembled
C15
CAP
DNI
TBA
0603 Ceramic Capacitor Location
TBA
Not Assembled
C16
CAP
DNI
TBA
0603 Ceramic Capacitor Location
TBA
Not Assembled
C17
CAP
DNI
TBA
0603 Ceramic Capacitor Location
TBA
Not Assembled
C19
CAP
10uF
±10%
10V X5R Ceramic Capacitor
2222 2401 3676
FEC 9402136
C20
CAP
0.1uF
±10%
50V X7R Ceramic Capacitor
GRM188R71H104KA93D
FEC 8820023
C21
CAP
0.1uF
±10%
50V X7R Ceramic Capacitor
GRM188R71H104KA93D
FEC 8820023
C22
CAP+
10uF
±10%
20V Tantalum Capacitor
TAJB106K020R
FEC 197427
C23
CAP
0.1uF
±10%
50V X7R Ceramic Capacitor
GRM188R71H104KA93D
FEC 8820023
C24
CAP+
10uF
±10%
20V Tantalum Capacitor
TAJB106K020R
Not Assembled
C25
CAP
0.1uF
±10%
50V X7R Ceramic Capacitor
GRM188R71H104KA93D
FEC 8820023
CONVSTA
TESTPOINT
Red Testpoint
20-313137
FEC 8731144 (Pack)
CONVSTB
TESTPOINT
Red Testpoint
20-313137
FEC 8731144 (Pack)
CONVST_A
SMB
Straight PCB Mount SMB Jack - 50 Ohm
1-1337482-0
Not Assembled - Keep
holes free of solder
CONVST_B
SMB
Straight PCB Mount SMB Jack - 50 Ohm
1-1337482-0
Not Assembled - Keep
holes free of solder
CS
SMB
Straight PCB Mount SMB Jack - 50 Ohm
1-1337482-0
Not Assembled - Keep
holes free of solder
DB8
SMB
Straight PCB Mount SMB Jack - 50 Ohm
1-1337482-0
Not Assembled - Keep
holes free of solder
DOUT_A
SMB
Straight PCB Mount SMB Jack - 50 Ohm
1-1337482-0
Not Assembled - Keep
holes free of solder
FRSTDATA
TESTPOINT
Red Testpoint
20-313137
FEC 8731144 (Pack)
Rev. PrA | Page 22 of 28
Preliminary Technical Data
EVAL-AD7609EDZ
J1
CON\41612\96
DIN41612 PCB Connector 96-Pin
0903 196 7921
FEC 1096832
J2
HEADER32
32-Pin (2x16) 0.1" Pitch Header
M20-9981606
FEC 102-2244 (36 Pin)
J5
CON\POWER
2 Pin Terminal Block (5mm Pitch)
CTB5000/2
FEC 151789
J6
CON\POWER
2 Pin Terminal Block (5mm Pitch)
CTB5000/2
FEC 151789
K0
SHORT-0402
Shorting Location - Use 0402 0r Resistor
if short is required
n/a
Populate with 0ohm
0402 resister
K1
SHORT-0402
Shorting Location - Use 0402 0r Resistor
if short is required
n/a
Populate with 0ohm
0402 resister
K2
SHORT-0402
Shorting Location - Use 0402 0r Resistor
if short is required
n/a
Populate with 0ohm
0402 resister
K3
SHORT-0402
Shorting Location - Use 0402 0r Resistor
if short is required
n/a
Populate with 0ohm
0402 resister
K4
SHORT-0402
Shorting Location - Use 0402 0r Resistor
if short is required
n/a
Populate with 0ohm
0402 resister
K5
SHORT-0402
Shorting Location - Use 0402 0r Resistor
if short is required
n/a
Populate with 0ohm
0402 resister
K6
SHORT-0402
Shorting Location - Use 0402 0r Resistor
if short is required
n/a
Populate with 0ohm
0402 resister
K7
SHORT-0402
Shorting Location - Use 0402 0r Resistor
if short is required
n/a
Populate with 0ohm
0402 resister
K8
SHORT-0402
Shorting Location - Use 0402 0r Resistor
if short is required
n/a
Populate with 0ohm
0402 resister
K9
SHORT-0402
Shorting Location - Use 0402 0r Resistor
if short is required
n/a
Populate with 0ohm
0402 resister
K10
SHORT-0402
Shorting Location - Use 0402 0r Resistor
if short is required
n/a
Populate with 0ohm
0402 resister
K11
SHORT-0402
Shorting Location - Use 0402 0r Resistor
if short is required
n/a
Populate with 0ohm
0402 resister
K12
SHORT-0402
Shorting Location - Use 0402 0r Resistor
if short is required
n/a
Populate with 0ohm
0402 resister
K13
SHORT-0402
Shorting Location - Use 0402 0r Resistor
if short is required
n/a
Populate with 0ohm
0402 resister
K14
SHORT-0402
Shorting Location - Use 0402 0r Resistor
if short is required
n/a
Populate with 0ohm
0402 resister
K15
SHORT-0402
Shorting Location - Use 0402 0r Resistor
if short is required
n/a
Populate with 0ohm
0402 resister
LC1
EMC_FILTER
1nF
(+80% / 20%)
3-Terminal Capacitor
NFM61R10T102T1
FEC 952-8202
LC2
EMC_FILTER
1nF
(+80% / 20%)
3-Terminal Capacitor
NFM61R10T102T1
FEC 952-8202
SH1
JUMPER
0r(DNI)
±1%
0603 Resistor Location - Not Populated
MC 0.063W 0603 0r
Not Assembled
SH2
JUMPER
0r(DNI)
±1%
0603 Resistor Location - Not Populated
MC 0.063W 0603 0r
Not Assembled
SH3
JUMPER
0r(DNI)
±1%
0603 Resistor Location - Not Populated
MC 0.063W 0603 0r
Not Assembled
SH4
JUMPER
0r(DNI)
±1%
0603 Resistor Location - Not Populated
MC 0.063W 0603 0r
Not Assembled
SH5
JUMPER
0r(DNI)
±1%
0603 Resistor Location - Not Populated
MC 0.063W 0603 0r
Not Assembled
SH6
JUMPER
0r(DNI)
±1%
0603 Resistor Location - Not Populated
MC 0.063W 0603 0r
Not Assembled
SH7
JUMPER
0r(DNI)
±1%
0603 Resistor Location - Not Populated
MC 0.063W 0603 0r
Not Assembled
SH8
JUMPER
0r(DNI)
±1%
0603 Resistor Location - Not Populated
MC 0.063W 0603 0r
Not Assembled
OS0
TESTPOINT
Red Testpoint
20-313137
FEC 8731144 (Pack)
OS1
TESTPOINT
Red Testpoint
20-313137
FEC 8731144 (Pack)
Rev. PrA | Page 23 of 28
EVAL-AD7609EDZ
OS2
TESTPOINT
Red Testpoint
20-313137
FEC 8731144 (Pack)
R1
RES
1K
±1%
SMD Resistor
MC 0.063W 0603 1k
Not Assembled
R2
RES
1K
±1%
0603 Resistor Location
MC 0.063W 0603 1k
Not Assembled
R3
RES
1K
±1%
SMD Resistor
MC 0.063W 0603 1k
FEC 933-0380
R4
RES
1K
±1%
0603 Resistor Location
MC 0.063W 0603 1k
Not Assembled
R5
RES
1K
±1%
0603 Resistor Location
MC 0.063W 0603 1k
Not Assembled
R6
RES
1K
±1%
SMD Resistor
MC 0.063W 0603 1k
FEC 933-0380
R7
RES
1K
±1%
0603 Resistor Location
MC 0.063W 0603 1k
Not Assembled
R8
RES
1K
±1%
SMD Resistor
MC 0.063W 0603 1k
Not Assembled
R9
RES
1K
±1%
0603 Resistor Location
MC 0.063W 0603 1k
Not Assembled
R10
RES
1K
±1%
SMD Resistor
MC 0.063W 0603 1k
Not Assembled
R11
RES
1K
±1%
0603 Resistor Location
MC 0.063W 0603 1k
Not Assembled
R12
RES
1K
±1%
SMD Resistor
MC 0.063W 0603 1k
Not Assembled
R13
RES
1K
±1%
SMD Resistor
MC 0.063W 0603 1K
Not Assembled
R14
RES
0r
±1%
SMD Resistor
MC 0.063W 0603 0r
FEC 933-1662
R15
RES
0r
±1%
SMD Resistor
MC 0.063W 0603 0r
FEC 933-1662
R16
RES
0r
±1%
SMD Resistor
MC 0.063W 0603 0r
FEC 933-1662
R17
RES
0r
±1%
SMD Resistor
MC 0.063W 0603 0r
FEC 933-1662
R18
RES
0r
±1%
SMD Resistor
MC 0.063W 0603 0r
FEC 933-1662
R19
RES
0r
±1%
SMD Resistor
MC 0.063W 0603 0r
FEC 933-1662
R20
RES
0r
±1%
SMD Resistor
MC 0.063W 0603 0r
FEC 933-1662
R21
RES
0r
±1%
SMD Resistor
MC 0.063W 0603 0r
FEC 933-1662
R22
RES
0r
±1%
SMD Resistor
MC 0.063W 0603 0r
FEC 933-1662
R23
RES
0r
±1%
SMD Resistor
MC 0.063W 0603 0r
FEC 933-1662
R24
RES
0r
±1%
SMD Resistor
MC 0.063W 0603 0r
FEC 933-1662
R25
RES
0r
±1%
SMD Resistor
MC 0.063W 0603 0r
FEC 933-1662
R26
RES
0r
±1%
SMD Resistor
MC 0.063W 0603 0r
FEC 933-1662
R27
RES
0r
±1%
SMD Resistor
MC 0.063W 0603 0r
FEC 933-1662
R28
RES
0r
±1%
SMD Resistor
MC 0.063W 0603 0r
FEC 933-1662
R29
RES
0r
±1%
SMD Resistor
MC 0.063W 0603 0r
FEC 933-1662
R30
RES
0r
±1%
SMD Resistor
MC 0.063W 0603 0r
FEC 933-1662
RD
SMB
Straight PCB Mount SMB Jack - 50 Ohm
1-1337482-0
Not Assembled - Keep
holes free of solder
SCLK
SMB
Straight PCB Mount SMB Jack - 50 Ohm
1-1337482-0
Not Assembled - Keep
holes free of solder
SL2
SOLDERLINK-3WAY
3-way Solder Link (Use 0r 0603 Resistor)
Insert in Link Position "B"
FEC 933-1662
SL3
SOLDERLINK-4WAY
4-way Solder Link (Use 0r 0603 Resistor)
Insert in Link Position "A"
FEC 933-1662
SL4
JUMPER2\SOLDERBRIDGE
2 Way solder Bridge
Insert in Link Position "A"
FEC 933-1662
SL5
JUMPER2\SOLDERBRIDGE
2 Way solder Bridge
Insert in Link Position "A"
FEC 933-1662
SL6
JUMPER2\SOLDERBRIDGE
2 Way solder Bridge
Insert in Link Position "B"
FEC 933-1662
Rev. PrA | Page 24 of 28
Preliminary Technical Data
EVAL-AD7609EDZ
n/a
Keep Pads Free of
solder (Not
Assembled)
n/a
Keep Pads Free of
solder (Not
Assembled)
Solder to Link A
Center pad and A Side
to be shorted with
Solder
2 Way solder Bridge
Solder to Link A
Center pad and A Side
to be shorted with
Solder
AD7606
Analog/Digital Converter
AD7609BSTZ
AD7609BSTZ
U3
ADR421
2.5V Reference
ADR421ARZ
ADR421ARZ
V4+
SMB
Straight PCB Mount SMB Jack - 50 Ohm
1-1337482-0
FEC 1206013
V4-
SMB
Straight PCB Mount SMB Jack - 50 Ohm
1-1337482-0
FEC 1206013
V5+
SMB
Straight PCB Mount SMB Jack - 50 Ohm
1-1337482-0
FEC 1206013
V5-
SMB
Straight PCB Mount SMB Jack - 50 Ohm
1-1337482-0
FEC 1206013
\CS
TESTPOINT
Red Testpoint
20-313137
FEC 8731144 (Pack)
\RD
TESTPOINT
Red Testpoint
20-313137
FEC 8731144 (Pack)
SL7
JUMPER2\SOLDERBRIDGE
SL8
JUMPER2\SOLDERBRIDGE
SL9
JUMPER2\SOLDERBRIDGE
SL10
JUMPER2\SOLDERBRIDGE
U1
2 Way solder Bridge
2 Way solder Bridge
2 Way solder Bridge
ORDERING GUIDE
Model
EVAL-AD7609EDZ1
EVAL- CED1Z1
1
ESD CAUTION
Description
Evaluation Board for AD7609
Controller Board
Z = RoHS Compliant Part.
Rev. PrA | Page 25 of 28
EVAL-AD7609EDZ
NOTES
Rev. PrA | Page 26 of 28
Preliminary Technical Data
EVAL-AD7609EDZ
NOTES
Rev. PrA | Page 27 of 28
EVAL-AD7609EDZ
NOTES
©2008 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
EB07606-0-01/09(0)
Rev. PrA | Page 28 of 28